Comparison of Various Attacks on WSN Layers—Based on the Site of the Attacker and Access Level

In the earlier few years, more concern has been focused on wireless sensor networks with its large range of applications in different areas even in critical situations like commercial applications, battlegrounds, pollution sensing, habitat observing of animals, smart buildings and homes, secure homeland, military monitoring, hospitals, and other various locations; thus, there are many chances of attacks in WSNs. Security is major concern to control of these attacks for a secure data as well as secure transmission, in wireless sensor network. Our main focus in this work is to provide a detailed comparison of various attackers site-based attack and access level attacks on various network layers of WSNs.